<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>姓名案例_插值语法</title>
    <!-- 引入Vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!-- 准备好一个容器 -->
    <div id="root">
        姓：<input type="text" v-model="firstName"><br/><br/>
        名：<input type="text" v-model="lastName"><br/><br/>
        全名：<span>{{firstName.slice(0, 3)}} - {{lastName}}</span>
    </div>
</body>

<script type="text/javascript">
    Vue.config.productionTip = false;   // 阻止vue 在启动时生成生产提示

    new Vue({
        el: "#root",
        data: {
            firstName: "张",
            lastName: "三"
        }
    })
</script>
</html>